Process of making soap in the form of tablets or the like.



sratrns a MELCHIOR CASTENHOLZ, OF COLOGNE, GERMANY.

PROCESS OF MAKING SOAP IN THE FORM OF TABLETS OR THE LIKE.

No Drawing.

To all whom 1'2 M ay concern lle it known that I, MELomon CASTEN- mom, a citizen of the German. Empire, and residing at Cologne on-the-Rhine, Germany, have invented a certain new and useful Improved Process of Making Soap in the Form of Tablets or the Like, or which the following is a specification.

My invention re ates to the manufacture of soap i the form of tablets and the like, and a primary object is to make soappowder for personal use in a suitable form, 6. 9. that. of a tablet, ball, cylinder and so on,- each tablet or the like being of such a size that it just sufiices for being used once. My soap-powder difi'ers from the pieces of solid soap in the form of tablets hitherto employed for such personal use in the lavatorie-s of railroad-cars, restaurants, hotels, places of amusementand so on, in that when in contact with the water employed for washing it is. immediately and wholly converted by the pressure of the palms of the hand into a light foamy lather, and can thus be completely utilized.

The mode of making my soap not only enables pieces of soap to be n'iade from soap-powder which are comparatively light but nevertheless lar e enough to be felt, by the hand, and therefore cause no loss of soap during the act of washing, but also supplies a convenient form of soap for disposal and carriage or for application to particular purposes and requirements. The formation of soap-powder into tablets by applying" pressure is a process known per 88. Such soap-containing bodies as have been produced by known processes have however not the same important property as that desired and completely obtained by my process, i. c. the property of becoming; immediately reconverted into powder when brought into contact with water and subjected to feel uncomfortably rough to the palms ofthe hands and are moreover wasteful because the c'rumbled particles are carried away by the water. Known commercial soap-powders which contain a large per- Specification of Letters Patent.

Patented Apr. 1, 1%]13;

Application filed November 12, 1912. Serial No. 730,905.

centage of soda and are formed into tablets and the like, are by no means adapted to dissolve into a lather leaving no remnant of soap when coming in contact with water in the manner described.

My process of producing a soap-powder suitable for being molded inthe manner described consists in first adding to a dephlegmated soda or potash soap at least an equal quantity by weightof dephleg'mated powdered borax. in then adding in known manner a small quantity of a good vegetable oil\vith the addition, according to desire or requirement-,of niedicaments, antiseptics, coloring agents, scents, and so onin then heating the composite mass to'the boiling point, stirring it around in the meantime until a homogeneous paste is formed which is poured out onto a suitable support and then dried. During and after drying the paste formed as described breaks up into powder. The latter is thereupon further reduced to a very tine, loose powder which then inserted into molds, wherein a light pressure exercised by a press forms the.

mass into tablets, balls, pellets, rods and the like. It is admitted that it is also known to employ a borax admixture when manufacturing soap-powders. Such admixtures of powdered borax have, however, heretofore been expressly employed for their medicinal ett'ects; tended to be rubbed on the surface of the body to enable the horax admixture to penetrate the pores of the skin and so produce a ren'iedial effect. The previous admixture of borax has, moreover, hitherto been so insignificant, that it has not been able even in an'approximate degree to produce the effect I obtain, viz. that the tablets when coining, into contact with water resolve into lather, and this is because I require a minimum admixture to the pot-ash or soda soap of about half of the quantity by weight of dephlegmated powdered borax. The action I desire becomes,'however, perfect as soon an equal quantity of dephlegmated .pow-

dered borax has been added to the potash or soda soap. The dephlegmation of the powdered horas is effected byspreading the same over moderately heated pans'until the mechanicallynot chemically-bound Water contained in the powdered borax is evaporated.

I claim A process of making soap in the form of such powders have been'inmail dissiuble tablets, consisting in ma- 1 i! 1g \todephlegmatad alkaline snap at lem st an equal weight of dephlegmabecl powdered borax, in addmg a small quantity of & Vega table nil thereto. in heating tha mixturg thusobcained to the boiling point whereby a, paste is obtainegl, in drying the paste and ;hereby obtaining a pbwder, in R'ec'iucing the murder thus obtainedto a, finer powder, and

1. 1n suficiently compressing the fine pawderin' n being usecL n tesmnony wmxreoj? Ti my sigma/mm m the presence of mm WEBQESGS,

MELCHIUH, Witnesses:

ELLE WQLTMANN,

@scm DEPNERE 

